Dry mass accumulation of cotton under drip and furrow irrigation in Uzbekistan

¹ Cotton Breeding, Seed Production and Agrotechnologies Research Institute (CBSPARI), UzPITI street, Botanika, Kibray district, Tashkent province, 111202, Uzbekistan
² National Research University TIIAME, st. Kori Niyazov, house 39, Tashkent, 100000, Uzbekistan
³ Chirchik higher tank commander-engineering school of education, Amir Temur street, 1st small district, 15 Tashkent, Chirchik, 111715, Uzbekistan

^* Corresponding author: tiqxmmi1977@mail.ru

Abstract

Past investigate set up application of wrinkle water system to create growth-stage-specific water system planning for upland cotton (Gossypium hirsutum L.) in Uzbekistan. The paper presents encourage examination of water system planning for two cotton assortments and its impact on seed-lint abdicate and water system trim water efficiency beneath wrinkle and trickle water system innovation. Field experiments were conducted in silt loam soils of Samarkand province, Uzbekistan, in 2019, 2020, and 2021. The development stages of germination to blooming, blossoming to boll arrangement, and development were considered for the improvement of water system planning Fc with regard to field capacity (Fc). The best growth, development and seed-lint yield for the C-8286 cotton variety were achieved in drip irrigation with irrigation scheduling of 75-75-70% of Fc, wetting front layer of 50-70-50 cm where the seed-lint yield totaled 4.99 t ha^-1. The highest seed-lint yield (4.74 t ha^-1) obtained in irrigation scheduling of 70-70-60% Fc regarding Bukhara-102 variety. Irrigation scheduling of 75-75-70% Fc for cotton variety C-8286 and 70-70-60% Fc for Bukhara-102 variety and drip irrigation should be considered applicable practices for both aforementioned cotton varieties on silt loam soils of Samarkand province and for similar soil-climatic conditions of Central Asia.